# CVE-2026-103590: QloApps through 1.7.0 Reflected XSS via Length of Stay Fields

> Attackers can execute arbitrary JavaScript in admin sessions via reflected XSS in QloApps room type editor fields.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Sep 2026
- **Updated:** 6 Oct 2026
- **Also known as:** GHSA-5wxf-fcx2-rcwq

## What is CVE-2026-103590?

CVE-2026-103590 is a medium-severity cross-site scripting vulnerability in Webkul QloApps, published on 30 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

QloApps through 1.7.0 contains a reflected cross-site scripting vulnerability in the back-office room type editor's length of stay fields. Attackers can induce authenticated administrators to submit crafted POST requests with malicious payloads in restriction_min_los and restriction_max_los parameters, executing arbitrary JavaScript in the victim's administrative session.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-103590?


## How do I fix CVE-2026-103590?

No fix has been published for CVE-2026-103590 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-103590 being exploited?

There is no known exploitation of CVE-2026-103590 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-103590 and fix it if it is affected.

What it is: CVE-2026-103590 is a medium-severity cross-site scripting vulnerability in Webkul QloApps, published on 30 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-103590 in the wild and no public exploit code.

Affected product: Webkul QloApps. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-103590/ (Markdown: https://insights.sbomify.com/CVE-2026-103590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-103590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-103590
- OSV: https://osv.dev/vulnerability/CVE-2026-103590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-103590/
Summaries are generated and may contain mistakes; the official description above is the record.